diff --git a/drivers/net/mlx4/mr.c b/drivers/net/mlx4/mr.c
index 9c188bdd7f4f2c5a6a3a124749d513c4d6b77958..ab639cfef78ea8005f39beccd6a8f71a92ed96c9 100644
--- a/drivers/net/mlx4/mr.c
+++ b/drivers/net/mlx4/mr.c
@@ -139,7 +139,7 @@ static int mlx4_buddy_init(struct mlx4_buddy *buddy, int max_order)
 
 	buddy->bits = kzalloc((buddy->max_order + 1) * sizeof (long *),
 			      GFP_KERNEL);
-	buddy->num_free = kzalloc((buddy->max_order + 1) * sizeof (int *),
+	buddy->num_free = kcalloc((buddy->max_order + 1), sizeof *buddy->num_free,
 				  GFP_KERNEL);
 	if (!buddy->bits || !buddy->num_free)
 		goto err_out;